Evolution Message Board - Msg: 26943217

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Politics : Evolution

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To: J_F_Shepard who wrote (9479)	11/6/2010 7:19:57 PM
From: Brumar89	Read Replies (1) of 69300

If you really want to know how the encoding system works, there are books that will teach you that. Trying to deny there is an information encoding system in each living cell is a non-starter. Here's an online wikipedia reference. en.wikipedia.org The code (the one thats been decoded that is) is below: Briefly, there are four DNA/RNA bases. A nano-machine called a ribosome ( en.wikipedia.org ) reads a string of RNA like a tape reader reads a tape. Each three bases in sequence constitute a codon or the message "STOP". Each codon designates a particular amino acid. As the ribosome reads the RNA, it attaches the amino acid designated on the table above onto a protein being built. IOW a string of RNA contains a recipe for building a particular amino acid (proteins are made up of hundreds, in some cases thousands of amino acids which must be in an exact sequence for the protein to fulfill its function), complete with a STOP codon telling the ribosome when the protein is complete. There are hundreds of thousands of different proteins used in living things and tens of thousands of ribosomes in each cell constantly building new proteins. There is no natural chemical or physical reason why a particular set of three bases should constitute a codon, or why a codon should designate a particular amino acid or the message STOP. Its just like how the letter "B" designates a certain sound used in speech or the way "dot dot dot" designates the letter S in morse code. We can know why "B" and "dot dot dot" denote what they do. Humans made the rules of the alphabet and morse code. But there's no natural explanation how nature could designate rules like we do in information encoding systems.

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